from tkinter import *

x = int(input("Введите начальную координату по x: "))
y = int(input("Введите начальную координату по y: "))
n = int(input("Введите коэффициент увеличения: "))

coords = [0, 0, 10, 0, 10, 10, 20, 10, 20, 20, 0, 20]

if n == 0 and x >= 0 and x <= 500 and y >= 0 and y <= 500:
    pass
else:
    if n > 0 and 0*n+x >= 0 and 0*n+y >= 0 and 20*n+x <= 500 and 20*n+y <= 500:
        pass
    else:
        if n < 0 and 20*n+x >= 0 and 20*n+y >= 0 and 0*n+x <= 500 and 0*n+y <= 500:
            pass
        else:
            print('Размер фигуры превышает максимальный размер поля')
            exit()

root = Tk()
root.title("program_7_1")
root.geometry("500x500")

canvas = Canvas(bg="#1155ba", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)

canvas.create_polygon(coords[0] * n + x, coords[1] * n + y,
                      coords[2] * n + x, coords[3] * n + y,
                      coords[4] * n + x, coords[5] * n + y,
                      coords[6] * n + x, coords[7] * n + y,
                      coords[8] * n + x, coords[9] * n + y,
                      coords[10] * n + x, coords[11] * n + y)

root.mainloop()
